404666 has 8 divisors (see below), whose sum is σ = 628020. Its totient is φ = 195328.

The previous prime is 404597. The next prime is 404671. The reversal of 404666 is 666404.

It can be written as a sum of positive squares in 2 ways, for example, as 395641 + 9025 = 629^2 + 95^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

404666 is a modest number, since divided by 666 gives 404 as remainder.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 404666.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3431 + ... + 3546.

2⁴⁰⁴⁶⁶⁶ is an apocalyptic number.

404666 is a deficient number, since it is larger than the sum of its proper divisors (223354).

404666 is a wasteful number, since it uses less digits than its factorization.

404666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 404666 is about 636.1336337594. The cubic root of 404666 is about 73.9660179985.

The spelling of 404666 in words is "four hundred four thousand, six hundred sixty-six".